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cout<<\ cout<<\ }

class Student1: protected Student //ÉùÃ÷Ò»¸ö±£»¤ÅÉÉúÀà {public:

void get_value_1(); void display1( ); private:

int age; char addr[30]; };

void Student1::get_value_1() {get_value();

cin>>age>>addr; }

void Student1::display1( )

{cout<<\ cout<<\ cout<<\ cout<<\ cout<<\ }

int main( )

{Student1 stud1; stud1.get_value_1(); stud1.display1( ); return 0; }

4: ½â·¨Ò»

#include using namespace std; class Student//ÉùÃ÷»ùÀà

{public: void get_value(); void display( );

protected : int num;

char name[10]; char sex; };

//ÒýÓûùÀàµÄ±£»¤³ÉÔ± //ÒýÓûùÀàµÄ±£»¤³ÉÔ± //ÒýÓûùÀàµÄ±£»¤³ÉÔ± //ÒýÓÃÅÉÉúÀàµÄ˽ÓгÉÔ± //ÒýÓÃÅÉÉúÀàµÄ˽ÓгÉÔ± //stud1ÊÇÅÉÉúÀàstudent1ÀàµÄ¶ÔÏó //µ÷ÓÃÅÉÉúÀà¶ÔÏóstud1µÄ¹«ÓóÉÔ±º¯Êý //µ÷ÓÃÅÉÉúÀà¶ÔÏóstud1µÄ¹«ÓóÉÔ±º¯Êý //»ùÀ๫ÓóÉÔ± //»ùÀà±£»¤³ÉÔ± void Student::get_value() {cin>>num>>name>>sex;}

void Student::display( )

{cout<<\ cout<<\ cout<<\ }

class Student1: public Student {public:

void get_value_1(); void display1( ); private:

int age; char addr[30]; };

void Student1::get_value_1() {get_value();

cin>>age>>addr; }

void Student1::display1( )

{cout<<\ cout<<\ cout<<\ cout<<\ cout<<\ }

int main( )

{Student1 stud1; stud1.get_value_1(); get_value_1

stud1.display1( ); return 0; }

½â·¨¶þ

#include using namespace std;

class Student {public: void get_value(); void display( );

//ÉùÃ÷Ò»¸ö¹«ÓÃÅÉÉúÀà //ÒýÓûùÀàµÄ±£»¤³ÉÔ±£¬ºÏ·¨

//ÒýÓûùÀàµÄ±£»¤³ÉÔ±£¬ºÏ·¨ //ÒýÓûùÀàµÄ±£»¤³ÉÔ±£¬ºÏ·¨ //ÒýÓÃÅÉÉúÀàµÄ˽ÓгÉÔ±£¬ºÏ·¨ //ÒýÓÃÅÉÉúÀàµÄ˽ÓгÉÔ±£¬ºÏ·¨ //stud1ÊÇÅÉÉúÀàstudent1ÀàµÄ¶ÔÏó

//µ÷ÓÃÅÉÉúÀà¶ÔÏóstud1µÄ¹«ÓóÉÔ±º¯Êý //µ÷ÓÃÅÉÉúÀà¶ÔÏóstud1µÄ¹«ÓóÉÔ±º¯Êýdisplay1 //ÉùÃ÷»ùÀà

//»ùÀ๫ÓóÉÔ± protected : //»ùÀà±£»¤³ÉÔ± int num;

char name[10]; char sex; };

void Student::get_value() {cin>>num>>name>>sex;}

void Student::display( )

{cout<<\ cout<<\ cout<<\ }

class Student1: protected Student //ÉùÃ÷Ò»¸ö¹«ÓÃÅÉÉúÀà {public:

void get_value_1(); void display1( ); private:

int age; char addr[30]; };

void Student1::get_value_1() {cin>>age>>addr;}

void Student1::display1( ) {cout<<\

cout<<\ }

int main( )

{Student1 stud1; //stud1ÊÇÅÉÉúÀàstudent1ÀàµÄ¶ÔÏó stud1.get_value(); stud1.get_value_1(); stud1.display( );

stud1.display1(); //ºÏ·¨¡£display1ÊÇÅÉÉúÀàÖеĹ«ÓóÉÔ±º¯Êý return 0; } 5£º

class A //AΪ»ùÀà {public: void f1( );

int i; protected: void f2(); int j; private: int k; };

class B: public A //BΪAµÄ¹«ÓÃÅÉÉúÀà {public: void f3( ); protected: int m; private: int n; };

class C: public B {public: void f4(); private: int p; };

int main()

{A a1; B b1; C//c1ÊÇÅÉÉúÀàCµÄ¶ÔÏó return 0; }

6£º

#include using namespace std; class A {public: void f1( ); protected: void f2(); private: int i; };

class B: public A {public:

//CΪBµÄ¹«ÓÃÅÉÉúÀà //a1ÊÇ»ùÀàAµÄ¶ÔÏó //b1ÊÇÅÉÉúÀàBµÄ¶ÔÏó